cpu: Add a helper function cpu_get_lapic_addr

This change adds a helper function cpu_get_lapic_addr() that returns
LOCAL_APIC_ADDR for x86. It also adds a weak default implementation
which returns 0 if platform does not support LAPIC. This is being
done in preparation to move all ACPI table support in coreboot out of
arch/x86.

BUG=b:155428745

Change-Id: I4d9c50ee46804164712aaa22be1b434f800871ec
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40929
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Furquan Shaikh
2020-04-30 21:27:47 -07:00
committed by Felix Held
parent a268aac9e5
commit b1859a6687
3 changed files with 16 additions and 2 deletions

View File

@@ -354,3 +354,8 @@ int cpu_index(void)
}
return -1;
}
uintptr_t cpu_get_lapic_addr(void)
{
return LOCAL_APIC_ADDR;
}